I'm going to be honest, I want to like this hopper more than I do, It could be so much better though. The feed rate isn't consistent, and it's not exactly "upgradeable."

I use this with my spyder electra, and it works fine for the full auto mode, (13bps) and I've never chopped a ball in full auto mode. however, in semi auto, when I'm hitting 20 bps, it just doesn't cut it. someday when I'm finished upgrading my gun, I'll get a DYE Rotor, because I'm extremely impressed with it, but until then, I'll continue to use this. Don't get me wrong it's a great hopper, but not for speedball and faster shooters.

Conclusion:

It's a great hopper, and it would be wonderful for woodsball, but don't get it for speedball, save up and get a used DYE rotor or HALO B.